For your element, you have a couple of options to access it

<input _ngcontent-wle-c93="" formcontrolname="FirstName" mattooltip="Enter First Name" maxlength="50" matinput="" placeholder="First Name" class="mat-input-element mat-form-field-autofill-control ng-tns-c47-3 ng-pristine ng-invalid ng-touched" cdk-describedby-host="" id="mat-input-0" aria-invalid="true" aria-required="false" aria-describedby="mat-error-0">

Let's take it one by one

CSS_SELECTOR

drive.findElement(By.cssSelector("input[formcontrolname='FirstName'][placeholder='First Name']"));

XPATH

drive.findElement(By.xpath("//input[contains(@placeholder,'First Name')]"));

or

drive.findElement(By.xpath("//input[contains(@formcontrolname,'FirstName')]"));

or both

drive.findElement(By.xpath("//input[contains(@formcontrolname,'FirstName') and (@placeholder, 'FirstName')]"));

same for CSS_SELECTOR - I've shown to you the code with both, but you can access it even by specifying one attribute for your input element

The error says chrome is not reachable. Most probably that instance has been deleted

I am showing a simple method to save session data( all cookies will be saved ) and then load selenium to load from that instance.

Look at the following example

from selenium.webdriver.chrome.options import Options
from selenium import webdriver

session = "mySession"
chrome_driver_path = '/home/aahnik/Downloads/apps/chromedriver'
whatsapp_web_url = "https://web.whatsapp.com/"

chrome_options = Options()
chrome_options.add_argument(f'--user-data-dir={session}')

driver = webdriver.Chrome(
    options=chrome_options, executable_path=chrome_driver_path)

driver.get(whatsapp_web_url)

Now execute this code. WhatsApp web will open. Login by scanning the QR Code.
Now close the window, and then terminate the program.
Now will see a folder named mySession in your current user directory.
Execute this code again
This time you will find that you are already logged into WhatsApp.

Hope this helped.

Here's an example of how basic EPA & BVA applies to your data

So, practically in your case you'll have 3 values from equivalence partitioning and 4 values from boundary values analysis.

Don't forget to pay attention to 0. It's always a tricky point..
Good luck!

I would explore Cucumber Pro, which is an addition to Cucumber. More information is available at https://cucumber.io/pro

Test case can be like this:

Steps:

1. Open the application.

Expected result: Application should get opened successfully.

2. Open the issue resolution status module.

Expected Result: Issue resolution status module should get opened successfully.

3. Check the status of issue.

Expected Result:

If status of issue is 'resolution still not taken' then user with this criteria is blocked to visibility of this issue.

If status is something else then do whatever your application says to do.

Note: I just mentioned raw structure of test case. You can write this in format which you use for your test case.

This is while driver.find_element_by_class_name ("unviewed") == True: always False.

I shoul do it just like this:

def look_for_element (self):
     driver = self.driver
     print len (driver.find_elements_by_class_name ("unviewed")))
Or better by xpath:

def look_for_element (self):
     driver = self.driver
     print len (driver.find_elements_by_xpath ("// tr [contains (@class, 'unviewed') and @ data-rowkey]")))